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Write a Note on Heat Resistant Steel - Applied Chemistry 2

Write a note on heat resistant steel 

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Solution

These are steels which are exposed to high temperatures during proportion of equipment. Heat resistance is obtained by adding specific metals in appropriate proportion.
Following metals are used/added in stainless steel in order to make them heat resisting.
Molybdenum: 3.5% addition of this metal improves heat resistance of steel. 

Chromium: though this is the component in steel, but it is added more than 12%, it imports high grade heat resistance to steel. Such a steel is called as ‘nichrome’.
Uses:
For making equipment facing high temperature i.e. gas turbines, retorting, parts of boilers, steam – linings, aero engine valves, etc. 

 

Concept: Heat Resisting Steels
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